Siemens SINAMICS S120 Function Manual page 296

U/f control (vector control)
Parame‐ Meaning
ter values
7 Parabolic characteris‐
tic and ECO
19 Independent voltage
setpoint
Function diagram
● 6300
● 6301
Parameter
● p1300[0...n]
● p1320[0...n]
...
● p1327[0...n]
● p1330[0...n]
● p1331[0...n]
● p1333[0...n]
● r1348
● p1350[0...n]
294
Characteristic, see parameter 1 and ECO mode at a constant operating point.
● In the Eco mode, the efficiency at a constant operating point is optimized. This
optimization is only effective in steady-state operation and when the ramp-function
generator is not bypassed.
● You must activate slip compensation and set the scaling of the slip compensation
(p1335) so that the slip is completely compensated (generally, 100%).
The user can define the output voltage of the Motor Module independently of the fre‐
quency using BICO parameter p1330 via the interfaces (e.g. analog input AI0 of Termi‐
nal Board 30 –> p1330 = r4055[0]).
Vector control - U/f control, overview
Vector control - U/f characteristic and voltage boost
Open-loop/closed-loop control operating mode
U/f control programmable characteristic frequency 1
U/f control programmable characteristic voltage 4
CI: U/f control independent of voltage setpoint
Voltage limitation
U/f control FCC starting frequency
CO: U/f control Eco factor actual value
U/f control soft starting
Application / property
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions